Osmosis causes water to move from areas of low salt concentration to areas of high salt concentration.
The internal NaCl concentration of red blood cells is 0.9 M. The diagram below shows red blood cells submerged in solutions of four different NaCl concentrations—0 M, 0.65 M, 0.9 M, and 2 M.
red blood cell osmosis
Which of the diagrams shows red blood cells in the 2 M solution?